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Finding the Fourth Proportional to 1,270.59, 1,752.91 and 798.28

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Solution

The fourth proportional to 1,270.59, 1,752.91 and 798.28 is: 1,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.59 : 1,752.91 = 798.28 : x
  2. Step 2: Convert to fraction form
    1,270.59/1,752.91 = 798.28/x
  3. Step 3: Cross multiply
    1,270.59x = 1,752.91 × 798.28
  4. Step 4: Simplify right side
    1,270.59x = 1,399,312.99
  5. Step 5: Solve for x
    x = 1,399,312.99/1,270.59
  6. Step 6: Final answer
    x = 1,101.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.